I'm trying to edit the file plugins/content/jw_sigpro/tmpl/Galleria/default.php to implement an auto-zoom when mouse over with this script: www.elevateweb.co.uk/image-zoom/examples

Basically add a new attribute "data-zoom-image" with the ink to the image, but for this link dynamically change when switching between images have to modify the file plugins/content/jw_sigpro/tmpl/Galleria/js/behaviour.js.

But I can not make it work! I appreciate any help anyone can give me.
Thanks in advanced.

I would use CSS scaling and transitions in your position instead. Look for css 2D transforms and transition examples art W3Schools, there are plenty that will help you.

Hello, I follow your advice and tried to make it work with css3,  I based in this code cssdemos.tupence.co.uk/image-popup.htm  to edit the layout galleria. but the zoom always shows the first image! please someone can give me a hand with this?

Thanks in advanced.

I am sorry but the official support for commercial extensions has moved into the new JoomlaWorks Ticket Support System.

I am happy to help you with the CSS code if you open a ticket.